外星微生物也可能是安然无恙地潜藏在我们眼皮底下，科学家可以通过寻找生物化学替代物的标记寻找这些生物。
Alien microbes may also lurk right under our noses. Scientists can hunt for these organisms by looking for the markers of alternative biochemistry.
外星微生物也可能是安然无恙地潜藏在我们眼皮底下，科学家可以通过寻找生物化学替代物的标记寻找这些生物。
Alien microbes may also lurk right under our noses. Scientists can hunt for these organisms by looking for the markers of alternative biochemistry.
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